US7704106B2 - Electrical terminal and spring-force terminal connection therefor - Google Patents
Electrical terminal and spring-force terminal connection therefor Download PDFInfo
- Publication number
- US7704106B2 US7704106B2 US12/166,509 US16650908A US7704106B2 US 7704106 B2 US7704106 B2 US 7704106B2 US 16650908 A US16650908 A US 16650908A US 7704106 B2 US7704106 B2 US 7704106B2
- Authority
- US
- United States
- Prior art keywords
- spring
- limb
- section
- leaf spring
- clamping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004020 conductor Substances 0.000 claims abstract description 64
- 238000003780 insertion Methods 0.000 claims description 22
- 230000037431 insertion Effects 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 6
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 1
- 238000005224 laser annealing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/48455—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar insertion of a wire only possible by pressing on the spring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/4811—Spring details
- H01R4/4816—Spring details the spring shape preventing insertion of the conductor end when the spring is unbiased
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/484—Spring housing details
- H01R4/4842—Spring housing details the spring housing being provided with a single opening for insertion of a spring-activating tool
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
- H01R4/4846—Busbar details
Definitions
- the invention relates to a spring-force terminal connection for electrical conductors with a busbar section and a bent leaf spring, which has a bearing limb, which is supported on the busbar section, a spring bend section, which adjoins the bearing limb, and a clamping limb, which adjoins the spring bend section, for fixedly clamping a conductor to the busbar section.
- the invention furthermore relates to an electrical terminal with at least one such spring-force terminal connection, which is inserted into an insulating housing of the electrical terminal.
- DE 197 11 051 A1 discloses a connecting terminal for electrical conductors, with a spring-force terminal connection, which has a bent clamping spring formed from spring sheet steel with bearing limbs, which are connected to one another via a spring bend, and clamping limbs and a busbar, which is inserted into the clamping limb and bears against the bearing limb.
- a conductor insertion channel which extends from the rear spring bend of the clamping spring along the bearing limb and the busbar, is provided in the insulating housing of the terminal.
- DE 102 39 273 A1 discloses a spring-force terminal connection for an electrical conductor, in which the clamping limb end of a leaf spring dips into a rectangular material passage in a busbar section in such a way that the clamping limb end with a hole collar inner wall face of the material passage forms a clamping point for the electrical conductor.
- the bearing limb is supported on that side of the material passage which is opposite the clamping point.
- the leaf spring is provided with a U-shaped spring bend section.
- the present invention is based on the object of further reducing the physical width of clamping component parts in the direction of the spring excursion of the clamping spring.
- the object is achieved by the spring-force terminal connection of the type mentioned at the outset by virtue of the fact that, in the spring bend section, those parts of the leaf spring which merge with the bearing limb and the clamping limb run at least partially parallel to one another and bear against one another.
- the spring bend section with a reduced radial extent can preferably be realized by virtue of the fact that the leaf spring is folded over in the spring bend section, with the result that those parts of the leaf spring which bear against one another are connected to one another in the spring bend section via a 180° bend in the leaf spring.
- the leaf spring can therefore be produced from spring sheet steel which is folded over by means of a suitable shaping process.
- the leaf spring can also be produced from two parts of spring sheet steel.
- the leaf spring is formed from a first part, which contains the bearing limb, and a separate second part, which contains the clamping limb. These two separate parts are then connected to one another so as to form the bent integral leaf spring at the spring bend sections, which run parallel to one another, of the two parts.
- the connection should take place at the ends of the parallel spring bend sections.
- Those parts of the leaf spring which bear against one another in the spring bend section can be connected to one another by means of riveting, welding, adhesive bonding or an interlocking connection.
- the spring-force terminal connection can be configured, for example in design terms, in the manner known from DE 197 11 051 A1.
- the clamping limb of the leaf spring has a cutout and is bent back towards the bearing limb in such a way that the busbar section, which bears against the bearing limb, extends away from the bearing limb through the cutout, and the limit of the cutout at the end of the clamping limb together with the busbar section forms a clamping point for a conductor, which is plugged from the spring bend in the direction of the cutout and through the cutout.
- the spring-force terminal connection is configured so as to have the design known in principle from DE 102 39 273 A1.
- the busbar section is manufactured from a flat material and has a conductor plug-through opening.
- the leaf spring dips into the conductor plug-through opening and forms, with the material passage of the conductor plug-through opening, a clamping point by virtue of the clamping limb of the leaf spring in the rest position, in which there is no conductor inserted into the conductor plug-through opening, bearing in sprung fashion against a clamping section at the conductor plug-through opening.
- the bearing limb preferably likewise extends into the conductor plug-through opening and is supported on that inner edge of the conductor plug-through opening which is opposite the clamping point.
- the bearing limb it is also conceivable for the bearing limb to be fastened in another way on the busbar section.
- the insulating housing likewise has a conductor insertion channel, which adjoins the bearing limb and merges with a clamping point formed by the clamping limb and the busbar section, and an actuation channel, which adjoins that part of the spring bend section which merges with the clamping limb, adjacent to the spring terminal connection and opposite the conductor insertion channel, and runs towards the clamping limb.
- An actuating tool for example a screwdriver, can be inserted into this actuation channel in order to move the clamping limb away from the clamping point and to make it possible to insert and fixedly clamp a conductor or to unclamp a conductor from the clamping point.
- the leaf spring preferably forms a wall for the conductor insertion channel and the actuation channel, with the result that the physical width in the direction of the spring excursion is further reduced.
- the longitudinal axes of the conductor insertion channel and of the actuation channel run approximately parallel to one another.
- the maximum reduction in the radius of the spring bend of the leaf spring results in the actuation channel only needing to have a slight incline, or no incline at all, with respect to the longitudinal axis of the conductor insertion channel. This also results in a further reduction in the physical width in the direction of the spring excursion of the electrical terminal.
- FIG. 1 shows a cross-sectional view of an electrical terminal with a spring-force terminal connection in the rest position
- FIG. 2 shows an electrical terminal from FIG. 1 with a spring-force terminal connection in the actuation position.
- FIG. 1 shows a cross-sectional view of an electrical terminal 1 with a spring-force terminal connection 2 in the rest position, in which a leaf spring 3 , as a result of its spring force, springs back into a clamping position.
- the electrical terminal 1 has an insulating housing 4 , into which the spring-force terminal connection 2 is integrated.
- the spring-force terminal connection 2 in this case comprises the leaf spring 3 and a busbar section 5 , which, by way of example, is bent in the manner illustrated and is plugged through a cutout 6 in the leaf spring 3 .
- the leaf spring 3 is supported with a bearing limb 7 on the busbar section 5 , which is correspondingly plugged into or through a receptacle formed in the bearing limb with it being bent back in the direction of the bearing limb 7 .
- the leaf spring 3 furthermore has a clamping limb 8 , in which the cutout for passing through the busbar section 5 and a conductor end (not illustrated) is introduced.
- That end of the clamping limb 8 which forms the limit for the cutout 6 forms, together with that section of the busbar section 5 which is located in this region, a clamping point 9 for an electrical conductor, which is guided through a conductor plug-through opening 10 past the spring-force terminal connection 2 and through the cutout 6 into the cage formed by the busbar 5 beneath the clamping limb 8 .
- the figure shows that the bearing limb 7 and the clamping limb 8 , which is bent back in the direction of the bearing limb 7 and the busbar section 9 , merges with a common spring bend section 11 . That part 12 a of the leaf spring 3 which merges with the bearing limb 7 and that part 12 b of the leaf spring 3 which merges with the clamping limb 8 run parallel to one another and bear against one another in the region of the spring bend section 11 .
- the physical width of the spring-force terminal connection 2 is reduced to an extreme extent in the deflection direction of the leaf spring 3 by the extreme reduction in the bend such that those parts 12 a, 12 b of the spring bend section which merge with the bearing limb 7 and the clamping limb 8 are in touching contact with one another.
- the spring bend section 11 can be produced, as illustrated, by the leaf spring 3 , which is formed from integral spring sheet metal, being folded over. The folding over can take place during heating of the spring bend section 11 .
- a shaping process in conjunction with laser annealing or an induction heating process is advantageous.
- a folded-over spring bend section 11 can also be achieved by means of electrical heating by means of current-conducting electrodes, which bear against the parts 12 a, 12 b of the spring bend section 11 and compress them.
- the production of the spring bend section 11 with its reduced extent can also be achieved by virtue of the leaf spring 3 being produced from two parts of spring sheet metal, with the two parts being connected to one another, for example by means of riveting, welding or adhesive bonding, so as to form the integral leaf spring 3 having bearing and clamping limbs 7 , 8 .
- the actuation of the spring-force terminal connection 2 takes place via an actuation channel 13 , in which an actuating tool, such as a screwdriver, for example, can be inserted.
- an actuating tool such as a screwdriver, for example
- the clamping limb 8 is moved out of the rest position (towards the right in the embodiment illustrated) in order to release the clamping point and to make it possible to plug a conductor through the conductor insertion channel 10 through the cutout 6 or to unclamp a fixedly clamped conductor again.
- FIG. 2 shows the electrical terminal 1 from FIG. 1 in the actuation position.
- This figure shows that the clamping limb 8 has now been moved to such an extent that the cutout 6 is in the conductor insertion channel 10 , with the result that a conductor which has been plugged through the conductor insertion channel 10 is automatically also guided through the cutout into the cage formed by the bent busbar section 5 .
- the clamping limb 8 of the leaf spring 3 is moved towards the left again until the conductor end which is passed through the cutout 6 is pressed against the busbar section 5 in a manner known per se with the aid of that end of the clamping limb 8 which forms the limit for the cutout 6 and is fixed there.
- FIG. 2 further shows the longitudinal axes of the conductor insertion channel 10 and the actuation channel 13 .
- the figure shows that these longitudinal axes are only slightly offset at an angle with respect to one another. The angle is approximately from 0 to 10 degrees, preferably from 5 to 7 degrees. This approximately parallel alignment of the conductor insertion channel 10 and the actuation channel 13 is made possible by virtue of the fact that the extent of the spring bend section 11 is considerably reduced.
- an electrical terminal 1 is only one possible variant for the use of a spring-force terminal connection 3 with a spring bend section 11 having a reduced extent.
- Other use forms in known electrical terminals are conceivable in which the leaf spring with the spring bend section 11 having a large radius are replaced by the present spring-force terminal connection 2 .
Landscapes
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Clamps And Clips (AREA)
Abstract
Description
Claims (13)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007033097.0-34 | 2007-07-13 | ||
DE102007033097.0A DE102007033097B4 (en) | 2007-07-13 | 2007-07-13 | Electrical terminal and spring terminal connection for this purpose |
DE102007033097 | 2007-07-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20090017704A1 US20090017704A1 (en) | 2009-01-15 |
US7704106B2 true US7704106B2 (en) | 2010-04-27 |
Family
ID=40148871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/166,509 Expired - Fee Related US7704106B2 (en) | 2007-07-13 | 2008-07-02 | Electrical terminal and spring-force terminal connection therefor |
Country Status (4)
Country | Link |
---|---|
US (1) | US7704106B2 (en) |
JP (1) | JP5360531B2 (en) |
CN (1) | CN101345352B (en) |
DE (1) | DE102007033097B4 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120088415A1 (en) * | 2010-10-12 | 2012-04-12 | Bals Elektrotechnik Gmbh & Co. Kg | Screwless connection terminal |
US20180342816A1 (en) * | 2017-05-26 | 2018-11-29 | Switchlab Inc. | Metal leaf spring protection structure of electrical connection terminal |
US12003070B2 (en) | 2017-01-06 | 2024-06-04 | Hubbell Incorporated | Electrical wiring devices with screwless connection terminals |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202011102996U1 (en) | 2011-07-05 | 2011-08-29 | Wago Verwaltungsgesellschaft Mbh | Spring-loaded terminal and terminal component |
DE202014102521U1 (en) * | 2014-05-28 | 2015-09-03 | Weidmüller Interface GmbH & Co. KG | Direct plug compression spring clamp with retaining spring |
DE102015107853B4 (en) * | 2015-05-19 | 2020-08-13 | Wago Verwaltungsgesellschaft Mbh | Conductor connection terminal |
CN105826703A (en) * | 2016-05-02 | 2016-08-03 | 宁波速普电子有限公司 | Binding post |
DE102018109545A1 (en) * | 2018-04-20 | 2019-10-24 | Phoenix Contact Gmbh & Co. Kg | Spring terminal connection and conductor terminal |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1917503A1 (en) | 1967-05-19 | 1969-10-30 | Wago Kontakttechnik Gmbh | Screwless connection or connecting clamp |
DE2005923A1 (en) | 1970-02-10 | 1971-08-26 | Wago Kontakttechnik Gmbh | Connection or connection terminal |
US4139256A (en) * | 1977-09-15 | 1979-02-13 | North American Specialties Corp. | Electrical contact and method of making same |
DE3019149A1 (en) | 1980-05-20 | 1981-11-26 | Phönix Elektrizitätsgesellschaft H. Knümann GmbH & Co KG, 4933 Blomberg | Screw-less connector for conductor wires - has hairpin spring with one end released to lock bared end against conductive strip |
DE19711051A1 (en) | 1997-03-03 | 1998-09-10 | Wago Verwaltungs Gmbh | Clamp terminal for electrical conductor |
EP0924799A2 (en) | 1997-12-19 | 1999-06-23 | Brökelmann, Jaeger & Busse GmbH & Co | Apparatus for wiring connection places of components of electrical devices or installations |
DE19939572A1 (en) | 1998-09-02 | 2000-03-16 | Entrelec Sa | Device for elastically providing an electric connection in a connection terminal |
US6095874A (en) * | 1998-05-18 | 2000-08-01 | The Whitaker Corporation | Single piece electrical receptacle terminal |
DE10239273A1 (en) | 2002-08-22 | 2004-03-04 | Wago Verwaltungsgesellschaft Mbh | Spring clamp connection for an electrical conductor |
US6776670B2 (en) * | 2001-07-20 | 2004-08-17 | Wieland Electric Gmbh | Clamping spring |
US6875062B2 (en) * | 2002-10-17 | 2005-04-05 | Schneider Electric Industries Sas | Elastic connection terminal |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS504873B1 (en) * | 1969-05-10 | 1975-02-25 | ||
JPH0727570Y2 (en) * | 1989-04-25 | 1995-06-21 | 松下電工株式会社 | Quick-connect terminal |
JPH03124704U (en) * | 1990-03-27 | 1991-12-17 | ||
JPH06215810A (en) * | 1993-01-20 | 1994-08-05 | Fuji Denki Kogyo Kk | Terminal board for connecting electric wire |
GB9508153D0 (en) * | 1995-04-21 | 1995-06-07 | Amp Gmbh | Spring clamp terminal |
DE19626390C2 (en) * | 1995-07-02 | 1999-10-14 | Phoenix Contact Gmbh & Co | Electrical terminal with busbar connection |
JP3614837B2 (en) * | 2002-08-30 | 2005-01-26 | Smk株式会社 | Wire connection plug |
-
2007
- 2007-07-13 DE DE102007033097.0A patent/DE102007033097B4/en active Active
-
2008
- 2008-06-12 JP JP2008178405A patent/JP5360531B2/en not_active Expired - Fee Related
- 2008-07-02 US US12/166,509 patent/US7704106B2/en not_active Expired - Fee Related
- 2008-07-03 CN CN2008101272807A patent/CN101345352B/en not_active Expired - Fee Related
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1917503A1 (en) | 1967-05-19 | 1969-10-30 | Wago Kontakttechnik Gmbh | Screwless connection or connecting clamp |
DE2005923A1 (en) | 1970-02-10 | 1971-08-26 | Wago Kontakttechnik Gmbh | Connection or connection terminal |
US4139256A (en) * | 1977-09-15 | 1979-02-13 | North American Specialties Corp. | Electrical contact and method of making same |
DE3019149A1 (en) | 1980-05-20 | 1981-11-26 | Phönix Elektrizitätsgesellschaft H. Knümann GmbH & Co KG, 4933 Blomberg | Screw-less connector for conductor wires - has hairpin spring with one end released to lock bared end against conductive strip |
DE3019149C2 (en) | 1980-05-20 | 1983-05-05 | Phönix Elektrizitätsgesellschaft H. Knümann GmbH & Co KG, 4933 Blomberg | Screwless connector |
DE19711051A1 (en) | 1997-03-03 | 1998-09-10 | Wago Verwaltungs Gmbh | Clamp terminal for electrical conductor |
EP0924799A2 (en) | 1997-12-19 | 1999-06-23 | Brökelmann, Jaeger & Busse GmbH & Co | Apparatus for wiring connection places of components of electrical devices or installations |
US6095874A (en) * | 1998-05-18 | 2000-08-01 | The Whitaker Corporation | Single piece electrical receptacle terminal |
DE19939572A1 (en) | 1998-09-02 | 2000-03-16 | Entrelec Sa | Device for elastically providing an electric connection in a connection terminal |
US6776670B2 (en) * | 2001-07-20 | 2004-08-17 | Wieland Electric Gmbh | Clamping spring |
DE10239273A1 (en) | 2002-08-22 | 2004-03-04 | Wago Verwaltungsgesellschaft Mbh | Spring clamp connection for an electrical conductor |
US6875062B2 (en) * | 2002-10-17 | 2005-04-05 | Schneider Electric Industries Sas | Elastic connection terminal |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120088415A1 (en) * | 2010-10-12 | 2012-04-12 | Bals Elektrotechnik Gmbh & Co. Kg | Screwless connection terminal |
US8328588B2 (en) * | 2010-10-12 | 2012-12-11 | Bals Elektrotechnik Gmbh & Co. Kg | Screwless connection terminal |
US12003070B2 (en) | 2017-01-06 | 2024-06-04 | Hubbell Incorporated | Electrical wiring devices with screwless connection terminals |
US20180342816A1 (en) * | 2017-05-26 | 2018-11-29 | Switchlab Inc. | Metal leaf spring protection structure of electrical connection terminal |
US10651571B2 (en) * | 2017-05-26 | 2020-05-12 | Switchlab Inc. | Metal leaf spring protection structure of electrical connection terminal |
Also Published As
Publication number | Publication date |
---|---|
CN101345352A (en) | 2009-01-14 |
JP2009021242A (en) | 2009-01-29 |
JP5360531B2 (en) | 2013-12-04 |
CN101345352B (en) | 2013-02-27 |
DE102007033097B4 (en) | 2019-01-24 |
DE102007033097A1 (en) | 2009-01-22 |
US20090017704A1 (en) | 2009-01-15 |
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